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removal of 2,4-dichloro phenoxy acetic acid by silica particles obtained from the siliceous sand of houeyogbe(republic of benin)
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نویسنده
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glitho houefaannick leslie ,sagbo etienne v. ,osseni sèmiyou a. ,bonou sidoine s. ,cakpo arthur ,agani ignace ,laibi armel ,chouti wariskéwouyèmi
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منبع
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journal of water and environmental nanotechnology - 2024 - دوره : 9 - شماره : 4 - صفحه:469 -480
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چکیده
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In this study, silica sands from the commune of houéyogbé were used to synthesize silica particles by the sol-gel method, using sodium silicate as the reaction precursor. analysis by x-ray diffraction, infrared spectroscopy, and scanning electron microscopy revealed the formation of pure amorphous silica with spherical shapes. this material was used as an adsorbent to remove 2,4-dichlorophenoxyacetic acid, one of the pesticides most widely used by farmers in benin. the use of pesticides is a major environmental problem due to their toxicity. pesticides pollute soils, surface, and groundwater, and it is, therefore, important to find a way of mitigating or even eliminating their effects on the environment. adsorption tests for this pollutant were carried out in batch mode. the adsorption study showed a maximum of over 90%. the kinetic study indicates that adsorption is effective from the first five (5) minutes and becomes established after one hour. the l-type adsorption isotherm shows that pesticide adsorption takes place by progressive saturation (monolayer).
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کلیدواژه
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benin ,silica ,sol-gel ,4-d acid ,adsorption
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آدرس
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university of abomey-calavi (uac), faculty of science and technology (fast), laboratory of physical chemistry, materials and molecular modeling / unit of inorganic chemistry, benin, university of abomey-calavi (uac), faculty of science and technology (fast), laboratory of physical chemistry, materials and molecular modeling / unit of inorganic chemistry, benin, university of abomey-calavi (uac), faculty of science and technology (fast), laboratory of physical chemistry, materials and molecular modeling / unit of inorganic chemistry, benin, university of abomey-calavi (uac), faculty of science and technology (fast), laboratory of physical chemistry, materials and molecular modeling / unit of inorganic chemistry, benin, university of abomey-calavi (uac), faculty of science and technology (fast), laboratory of physical chemistry, materials and molecular modeling / unit of inorganic chemistry, benin, unstim, faculty of sciences and technologies of natitingou, kaba chemistry and applications research laboratory, benin, university of abomey-calavi (uac), faculty of science and technology (fast), laboratory of physical chemistry, materials and molecular modeling / unit of inorganic chemistry, benin, university of abomey-calavi (uac), faculty of science and technology (fast), laboratory of physical chemistry, materials and molecular modeling / unit of inorganic chemistry, benin
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پست الکترونیکی
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warischouti@yahoo.com
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Authors
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